This message seems to be problematic:

#: calendar/gui/apps_evolution_calendar.schemas.in.in.h:43
msgid ""
"Time divisions</short> <short>Intervals shown in Day and Work Week views, in "
"minutes."

Indeed, when one does look at the corresponding entry in
calendar/gui/apps_evolution_calendar.schemas.in.in, it seems the second
<short> should perhaps actually be a <long>:

    <schema>
      <key>/schemas/apps/evolution/calendar/display/time_divisions</key>
      <applyto>/apps/evolution/calendar/display/time_divisions</applyto>
      <owner>evolution-calendar</owner>
      <type>int</type>
      <default>30</default>
      <locale name="C">
        <short>Time divisions</short>
        <short>Intervals shown in Day and Work Week views, in minutes.</short>
      </locale>
    </schema>